1. Consider the BALANCED gas-phase reaction: Note that the full Lewis dot structures are NOT given, only the bond multiplicities. H C=O + 2 H-H CEO H-H H-C-O-H 1,079 436 C-H 414 C-O 351 0-H 460 Estimate AH° (in kJ) for this reaction using the following bond enthalpy data (all bond enthalpies in the above table are in kJ/mol). H
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![**Transcription for Educational Website:**
1. Consider the BALANCED gas-phase reaction: Note that the full Lewis dot structures are NOT given, only the bond multiplicities.
The chemical reaction is depicted as follows:
\[ \text{C} \equiv \text{O} + 2 \, \text{H-H} \rightarrow \text{H-C-O-H} \]
**Bond Enthalpy Data:**
- C≡O: 1079 kJ/mol
- H-H: 436 kJ/mol
- C-H: 414 kJ/mol
- C-O: 351 kJ/mol
- O-H: 460 kJ/mol
**Task:**
Estimate \( \Delta H^0 \) (in kJ) for this reaction using the provided bond enthalpy data. The bond enthalpies are expressed in kJ/mol.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a3d0eb8-332f-4022-954a-f4616e4c7096%2Fbb9c3e58-cd29-46a9-88d9-352ae930585b%2Fuarai7p_processed.png&w=3840&q=75)
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